import Vue from 'vue';
import Router from 'vue-router';
import EnumRouter from '@/constants/EnumRouter';
import { auth } from '@/utils/T';
Vue.use(Router);

/* LeftLayout */
import LeftLayout from '@/layout/LeftLayout';

/* MainLayout*/
import MainLayout from '@/layout/MainLayout';

import HeaderLayout from '@/layout/HeaderLayout';

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'/'el-icon-x' the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

const checkLoginRedirect = auth.isLogin() ? window.ENV.login.defaultRedirectUrl : EnumRouter.login;

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
export const constantRoutes = [
  {
    path: '',
    redirect: () => checkLoginRedirect,
    hidden: true
  },
  {
    path: EnumRouter.rootRoute,
    redirect: () => checkLoginRedirect,
    hidden: true
  },
  {
    path: EnumRouter.login,
    component: () => import('@/views/login/index'),
    hidden: true
  },

  {
    path: EnumRouter['404'],
    component: () => import('@/views/404'),
    hidden: true
  },

  {
    path: EnumRouter.dashboard,
    name: 'Dashboard',
    meta: { title: 'Dashboard', icon: 'icondashboard' },
    component: MainLayout,
    children: [{
      path: EnumRouter.dashboard,
      name: 'Dashboard',
      component: () => import('@/views/dashboard/index'),
      meta: { title: 'Dashboard', icon: 'icondashboard' }
    }]
  },

  {
    path: EnumRouter.home,
    name: 'Home',
    component: MainLayout,
    meta: { title: '首页', icon: 'el-icon-s-home' },
    children: [
      {
        path: EnumRouter.home,
        name: 'Home',
        component: () => import('@/views/home'),
        meta: { title: '首页', icon: 'el-icon-s-home' }
      }
    ]
  },

  {
    path: EnumRouter.example,
    component: MainLayout,
    redirect: EnumRouter.exampleTable,
    name: 'Example',
    meta: { title: 'Example', icon: 'el-icon-s-help' },
    children: [
      {
        path: EnumRouter.exampleTable,
        name: 'Table',
        component: () => import('@/views/table/index'),
        meta: { title: 'Table', icon: 'icontable' }
      },
      {
        path: EnumRouter.exampleTableDetail,
        name: 'TableDetail',
        hidden: true,
        component: () => import('@/views/table/TableDetail')
      },
      {
        path: EnumRouter.exampleTree,
        name: 'Tree',
        component: () => import('@/views/tree/index'),
        meta: { title: 'Tree', icon: 'icontree' }
      }
    ]
  },

  {
    path: EnumRouter.form,
    component: MainLayout,
    meta: { title: 'Form', icon: 'iconform' },
    name: 'Form',
    children: [
      {
        path: EnumRouter.form,
        name: 'Form',
        component: () => import('@/views/form/index'),
        meta: { title: 'Form', icon: 'iconform' }
      }
    ]
  },

  {
    path: EnumRouter.nested,
    component: MainLayout,
    redirect: EnumRouter.nestedMenu1_1,
    name: 'Nested',
    meta: { title: 'Nested', icon: 'iconnested' },
    children: [
      {
        path: EnumRouter.nestedMenu1,
        component: () => import('@/views/nested/menu1/index'), // Parent router-view
        name: 'Menu1',
        meta: { title: 'Menu1', icon: 'iconnested' },
        children: [
          {
            path: EnumRouter.nestedMenu1_1,
            component: () => import('@/views/nested/menu1/menu1-1'),
            name: 'Menu1-1',
            meta: { title: 'Menu1-1', icon: 'iconnested' }
          },
          {
            path: EnumRouter.nestedMenu1_2,
            component: () => import('@/views/nested/menu1/menu1-2'),
            name: 'Menu1-2',
            meta: { title: 'Menu1-2', icon: 'iconnested' },
            children: [
              {
                path: EnumRouter.nestedMenu1_2_1,
                component: () => import('@/views/nested/menu1/menu1-2/menu1-2-1'),
                name: 'Menu1-2-1',
                meta: { title: 'Menu1-2-1', icon: 'iconnested' }
              },
              {
                path: EnumRouter.nestedMenu1_2_2,
                component: () => import('@/views/nested/menu1/menu1-2/menu1-2-2'),
                name: 'Menu1-2-2',
                meta: { title: 'Menu1-2-2', icon: 'iconnested' }
              }
            ]
          },
          {
            path: EnumRouter.nestedMenu1_3,
            component: () => import('@/views/nested/menu1/menu1-3'),
            name: 'Menu1-3',
            meta: { title: 'Menu1-3', icon: 'iconnested' }
          }
        ]
      },
      {
        path: EnumRouter.nestedMenu2,
        component: () => import('@/views/nested/menu2/index'),
        name: 'Menu2',
        meta: { title: 'menu2', icon: 'iconnested' }
      }
    ]
  },

  {
    path: 'https://panjiachen.github.io/vue-element-admin-site/#/',
    name: 'External-link',
    meta: { title: 'External Link', icon: 'iconlink', target: '_blank' }
  },

  // 404 page must be placed at the end !!!
  { path: '*', redirect: EnumRouter['404'], hidden: true }
];

export const EnumMenuRoutes = constantRoutes.filter((item) => !item.hidden);

const createRouter = () => new Router({
  mode: 'history', // require service support
  scrollBehavior: () => ({ y: 0 }),
  routes: constantRoutes
});

const router = createRouter();

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
  const newRouter = createRouter();
  router.matcher = newRouter.matcher; // reset router
}

export default router;
